What does Umbrella corporation mean?

The Umbrella Corporation is a fictional company in the "Resident Evil" video game and film franchise, known for its unethical experiments and development of bio-organic weapons. It serves as a major antagonist, often depicted as conducting secretive and dangerous research, leading to catastrophic outbreaks of viruses and mutations. The corporation symbolizes corporate greed and the dangers of scientific experimentation without ethical considerations. Its activities and the resulting chaos drive much of the series' plot.